We use some really great tools for our development process.


Unity 3D (v3 and v4)
   Free GUI based tool for making games. Built in pathfinding, animation, and easy to use scripting make this a great tool for game development.

File Sharing and Team Work:

    External file storage you can install to your PC, and when dropping files in, syncs between all PCs.

.git repository
    This is a great tool for any development team. Automatically update and push new additions between ALL parts of your program or project, and revert back if you need to.